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Python DicomBytesIO.read方法代码示例

本文整理汇总了Python中pydicom.filebase.DicomBytesIO.read方法的典型用法代码示例。如果您正苦于以下问题:Python DicomBytesIO.read方法的具体用法?Python DicomBytesIO.read怎么用?Python DicomBytesIO.read使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在pydicom.filebase.DicomBytesIO的用法示例。


在下文中一共展示了DicomBytesIO.read方法的5个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: test_read_exact_length_raises

# 需要导入模块: from pydicom.filebase import DicomBytesIO [as 别名]
# 或者: from pydicom.filebase.DicomBytesIO import read [as 别名]
 def test_read_exact_length_raises(self):
     """Test DicomIO.read exact length raises if short"""
     fp = DicomBytesIO(b'\x00\x01\x03')
     fp.is_little_endian = True
     with pytest.raises(EOFError,
                        match="Unexpected end of file. Read 3 bytes of 4 "
                              "expected starting at position 0x0"):
         fp.read(length=4, need_exact_length=True)
开发者ID:jrkerns,项目名称:pydicom,代码行数:10,代码来源:test_filebase.py

示例2: test_read_exact_length

# 需要导入模块: from pydicom.filebase import DicomBytesIO [as 别名]
# 或者: from pydicom.filebase.DicomBytesIO import read [as 别名]
 def test_read_exact_length(self):
     """Test DicomIO.read exact length"""
     fp = DicomBytesIO(b'\x00\x01\x03\x04')
     fp.is_little_endian = True
     bytestream = fp.read(length=4, need_exact_length=True)
     assert bytestream == b'\x00\x01\x03\x04'
开发者ID:jrkerns,项目名称:pydicom,代码行数:8,代码来源:test_filebase.py

示例3: test_read

# 需要导入模块: from pydicom.filebase import DicomBytesIO [as 别名]
# 或者: from pydicom.filebase.DicomBytesIO import read [as 别名]
 def test_read(self):
     """Test DicomIO.read entire length"""
     fp = DicomBytesIO(b'\x00\x01\x03')
     fp.is_little_endian = True
     bytestream = fp.read(length=None, need_exact_length=False)
     assert bytestream == b'\x00\x01\x03'
开发者ID:jrkerns,项目名称:pydicom,代码行数:8,代码来源:test_filebase.py

示例4: test_read_length

# 需要导入模块: from pydicom.filebase import DicomBytesIO [as 别名]
# 或者: from pydicom.filebase.DicomBytesIO import read [as 别名]
 def test_read_length(self):
     """Test DicomIO.read specific length"""
     fp = DicomBytesIO(b'\x00\x01\x03')
     fp.is_little_endian = True
     bytestream = fp.read(length=2, need_exact_length=False)
     assert bytestream == b'\x00\x01'
开发者ID:jrkerns,项目名称:pydicom,代码行数:8,代码来源:test_filebase.py

示例5: TestWriteFileMetaInfo

# 需要导入模块: from pydicom.filebase import DicomBytesIO [as 别名]
# 或者: from pydicom.filebase.DicomBytesIO import read [as 别名]
class TestWriteFileMetaInfo(unittest.TestCase):
    """Unit tests for _write_file_meta_info."""
    def setUp(self):
        """Create an empty file-like for use in testing."""
        self.fp = DicomBytesIO()

    def test_bad_elements(self):
        """Test that non-group 2 elements aren't written to the file meta."""
        meta = Dataset()
        meta.PatientID = '12345678'
        meta.MediaStorageSOPClassUID = '1.1'
        meta.MediaStorageSOPInstanceUID = '1.2'
        meta.TransferSyntaxUID = '1.3'
        meta.ImplementationClassUID = '1.4'
        self.assertRaises(ValueError, _write_file_meta_info, self.fp, meta)

    def test_missing_elements(self):
        """Test that missing required elements raises ValueError."""
        meta = Dataset()
        self.assertRaises(ValueError, _write_file_meta_info, self.fp, meta)
        meta.MediaStorageSOPClassUID = '1.1'
        self.assertRaises(ValueError, _write_file_meta_info, self.fp, meta)
        meta.MediaStorageSOPInstanceUID = '1.2'
        self.assertRaises(ValueError, _write_file_meta_info, self.fp, meta)
        meta.TransferSyntaxUID = '1.3'
        self.assertRaises(ValueError, _write_file_meta_info, self.fp, meta)
        meta.ImplementationClassUID = '1.4'
        _write_file_meta_info(self.fp, meta)

    def test_prefix(self):
        """Test that the 'DICM' prefix is present."""
        meta = Dataset()
        meta.MediaStorageSOPClassUID = '1.1'
        meta.MediaStorageSOPInstanceUID = '1.2'
        meta.TransferSyntaxUID = '1.3'
        meta.ImplementationClassUID = '1.4'
        _write_file_meta_info(self.fp, meta)

        self.fp.seek(0)
        prefix = self.fp.read(4)
        self.assertEqual(prefix, b'DICM')

    def test_group_length(self):
        """Test that the value for FileMetaInformationGroupLength is OK."""
        meta = Dataset()
        meta.MediaStorageSOPClassUID = '1.1'
        meta.MediaStorageSOPInstanceUID = '1.2'
        meta.TransferSyntaxUID = '1.3'
        meta.ImplementationClassUID = '1.4'
        _write_file_meta_info(self.fp, meta)

        # 78 in total, - 4 for prefix, - 12 for group length = 62
        self.fp.seek(12)
        self.assertEqual(self.fp.read(4), b'\x3E\x00\x00\x00')

    def test_group_length_updated(self):
        """Test that FileMetaInformationGroupLength gets updated if present."""
        meta = Dataset()
        meta.FileMetaInformationGroupLength = 100 # Actual length
        meta.MediaStorageSOPClassUID = '1.1'
        meta.MediaStorageSOPInstanceUID = '1.2'
        meta.TransferSyntaxUID = '1.3'
        meta.ImplementationClassUID = '1.4'
        _write_file_meta_info(self.fp, meta)

        self.fp.seek(12)
        self.assertEqual(self.fp.read(4), b'\x3E\x00\x00\x00')
        # Check original file meta is unchanged/updated
        self.assertEqual(meta.FileMetaInformationGroupLength, 62)
        self.assertEqual(meta.FileMetaInformationVersion, b'\x00\x01')
        self.assertEqual(meta.MediaStorageSOPClassUID, '1.1')
        self.assertEqual(meta.MediaStorageSOPInstanceUID, '1.2')
        self.assertEqual(meta.TransferSyntaxUID, '1.3')
        self.assertEqual(meta.ImplementationClassUID, '1.4')

    def test_version(self):
        """Test that the value for FileMetaInformationVersion is OK."""
        meta = Dataset()
        meta.MediaStorageSOPClassUID = '1.1'
        meta.MediaStorageSOPInstanceUID = '1.2'
        meta.TransferSyntaxUID = '1.3'
        meta.ImplementationClassUID = '1.4'
        _write_file_meta_info(self.fp, meta)

        self.fp.seek(16 + 12)
        self.assertEqual(self.fp.read(2), b'\x00\x01')

    def test_filelike_position(self):
        """Test that the file-like's ending position is OK."""
        # 4 bytes prefix
        # 8 + 4 bytes FileMetaInformationGroupLength
        # 12 + 2 bytes FileMetaInformationVersion
        # 8 + 4 bytes MediaStorageSOPClassUID
        # 8 + 4 bytes MediaStorageSOPInstanceUID
        # 8 + 4 bytes TransferSyntaxUID
        # 8 + 4 bytes ImplementationClassUID
        # 78 bytes total
        meta = Dataset()
        meta.MediaStorageSOPClassUID = '1.1'
        meta.MediaStorageSOPInstanceUID = '1.2'
#.........这里部分代码省略.........
开发者ID:bastula,项目名称:pydicom,代码行数:103,代码来源:test_filewriter.py


注:本文中的pydicom.filebase.DicomBytesIO.read方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。